Flavor really depends on the quality of the tobacco you use. As long as the tobacco hasn't been sitting out and drying up there really shouldn't be a problem with flavor. If your tobacco is dry, you won't really get much flavor, and/or smoke from your hookah no matter how good it is.

And a tip for putting ice in your base, add some water first, and then add ice, swirl it around your base, and then add more water. If you add too much ice, or if you add ice first, you may run the risk of cracking your base. If your smoking a nice fruit flavor add some sugar in the base to enhance the sweetness of the flavor. Hope this helped.